{"product_id":"gsc-power-division-billet-s1-camshaft-kit-subaru-wrx-sti-ej257-dual-avcs-266-264","title":"GSC Power Division Billet S1 Camshaft Kit - Subaru WRX STI (EJ257 Dual AVCS) - 266\/264","description":"\u003ch2\u003eGSC Power Division Billet S1 Camshaft Kit - Subaru WRX STI (EJ257 Dual AVCS) - 266\/264\u003c\/h2\u003e\n\n\u003cp\u003eGSC Power Division are a well-regarded name in forced induction engine building, known for producing billet camshafts that deliver reliable power gains without sacrificing streetability. These S1 cams are a popular first step for \u003cstrong\u003eSubaru WRX STI\u003c\/strong\u003e owners chasing more top-end grunt from their EJ257, offering a meaningful lift in power while remaining compatible with factory valvetrain components.\u003c\/p\u003e\n\n\u003cp\u003eThis listing covers the GSC S1 Billet Camshaft Kit for the \u003cstrong\u003eSubaru WRX STI\u003c\/strong\u003e equipped with the \u003cstrong\u003eEJ257\u003c\/strong\u003e engine and Dual AVCS (Active Valve Control System). This applies to \u003cstrong\u003eGR\/GV\u003c\/strong\u003e chassis STI models from 2008 onwards. These cams are ground from billet steel for improved strength and consistency over reground OEM cores.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e These camshafts are designed for Dual AVCS EJ257 engines only. Confirm your specific build configuration before ordering, as compatibility varies across EJ257 variants.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntake duration: 266°\u003c\/li\u003e\n  \u003cli\u003eExhaust duration: 264°\u003c\/li\u003e\n  \u003cli\u003eConstruction: Billet steel\u003c\/li\u003e\n  \u003cli\u003eAVCS compatibility: Dual AVCS\u003c\/li\u003e\n  \u003cli\u003eApplication: Subaru EJ257 (WRX STI, 2008+)\u003c\/li\u003e\n  \u003cli\u003eKit includes: Intake and exhaust camshafts (full set)\u003c\/li\u003e\n  \u003cli\u003ePart number: 7026S1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eVehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and engine configuration are confirmed before ordering.\u003c\/p\u003e\n\n\u003cp\u003eNot sure if this kit suits your build? Contact our team at \u003ca href=\"mailto:sales@chicaneaustralia.com.au\"\u003esales@chicaneaustralia.com.au\u003c\/a\u003e for expert advice.\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":52541851042085,"sku":"7026S1","price":2135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/2943\/6709\/files\/b4dbafb1-f94a-48c0-916e-75a2257a9900-800.jpg?v=1781132220","url":"https:\/\/www.chicaneaustralia.com.au\/products\/gsc-power-division-billet-s1-camshaft-kit-subaru-wrx-sti-ej257-dual-avcs-266-264","provider":"Chicane Australia","version":"1.0","type":"link"}